<!--
@license
Copyright (c) 2017 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-->
<!doctype html>
<html>
<head>

  <title>Issue #389</title>

  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, minimum-scale=1.0, initial-scale=1, user-scalable=yes">
  <meta name="mobile-web-app-capable" content="yes">
  <meta name="apple-mobile-web-app-capable" content="yes">

  <script src="../../../webcomponentsjs/webcomponents-lite.js"></script>

  <link rel="import" href="../../../polymer/polymer.html">
  <link rel="import" href="../../iron-list.html">

  <style>

    body {
      margin: 0;
    }

  </style>

</head>
<body>
  
  <style>
    body {
      margin: 0;
    }
  </style>

</head>
<body>
  
  <dom-module id="x-list">
    <template>
      <style>
        :host {
          display: block;
        }
        
        #container {
          height: 400px;
        }

        iron-list {
          height: 100%;
        }
        
        .item {
          border-bottom: 1px solid #eee;
          height: 40px;
        }
      </style>
      
      <p>
        <button on-click="removeItems">remove 16 first items</button>
      </p>
      
      <div id="container">
        <iron-list items="[[items]]">
          <template>
            <div class="item">Item [[item]]</div>
          </template>
        </iron-list>
      </div>
    </template>
  </dom-module>
  <script>

    HTMLImports.whenReady(function() {
      Polymer({
        is: 'x-list',
        properties: {
          items: {
            type: Array,
            value: function() {
              var data = [];
              
              for (var i = 1; i <= 64; i++) {
                data.push(i);
              }
              
              return data;
            }
          }
        },
        
        removeItems:function() {
          for (var i = 0; i < 16; i++ ) {
            this.shift("items");
          }
          console.log("16 items removed")
        },
      });
    });
  </script>
  
  <x-list></x-list>

</body>
</html>
